If it's unattainable, how can it be a "lifetime quest"? Are you suggesting that everyone should fail their lifetime quests?
Check your language before posting.
I agree that grails should not be EASILY attainable. However I don't believe they should be unattainable either. I would personally make a distinction and call those unattainable grails, or unobtainium for short.
To me the phrase of "grail" in the community's common language is defined as THE END GOAL. It should be difficult but also within sight (but perhaps not within reach).
In 2021 when economy was good, my "grail" was Lange 1
Perhaps even the Grand Lange 1 moonphase, but because I also wanted GO PML which comes with a moon anyway so I probably wanted to opt for the vanilla Lange 1 instead.
Yes I was that greedy.
In 2022 we all know what happened to the financial market. My "grail" became just the GO PML.
It's something I can see myself getting, but not quite there yet unless I want to blow a hole in my portfolio.
It is something I can see myself getting when my cash flow is more than 5x the cost of the PML, which technically is just 50K.
I know the idea you're trying to get at, but don't make it to the other end of extreme. It's unnecessary.